What are the responsibilities and job description for the Senior Back End Developer position at Watchtower Labs?
Frontend Engineer – Watchtower Labs
Location: In Person required. Bellevue, WA.
Eligibility: U.S. Citizenship required
How to Apply
If this job speaks to you, share three bullet points that showcase your exceptional skills and achievements. Be bold. Be precise. Email your highlights to: jobs@watchtowerlabs.ai
About Watchtower Labs
At Watchtower Labs, we're an AI-first team with a singular mission: tackle the most demanding technical challenges in critical simulations and defense. We offer explosive personal growth, relentless complexity, and the rare opportunity to operate at the edge. If you're prepared to commit, with grit, determination, and the drive to excel, then this is your calling.
Role Overview
As a Backend Engineer, you'll help architect and build the core simulation engine powering intelligent, autonomous decision-making in dynamic, high-stakes environments. You’ll work directly on distributed systems that must operate reliably under uncertainty, driving breakthrough performance using modern engineering practices and secure infrastructure. This is a role for a builder who can create, own and evolve systems at the core of our product. An interdisciplinary background spanning design, data, systems, or other fields is a big plus, helping bridge perspectives and innovate across domains.
What You'll Do:
- Design and scale the backend for our multi-agent simulation platform
- Own distributed system components from architecture to deployment
- Collaborate with AI and frontend teams to power real-time decision loops
- Work in secure cloud environments to deliver production-grade systems
Ideal Candidate:
- 2–6 years of hands-on backend experience, preferably in C#/.NET Core/Linux/Python
- Strong grasp of system design and distributed architectures
- Ownership mindset with a bias toward shipping impactful code
- Comfortable navigating high-performance, mission-driven teams
This is more than just engineering, it’s a chance to protect lives, shape national security, and be part of a team that’s building what others only theorize.